- 1. Influence of disperse-hardening additive chrome diboride on the structure of carbide matrixes of PDC drill bits
- (Content №4 2024)
- Authors: B.T.Ratov*, orcid.org/0000-0003-4707-3322, Satbayev University, Almaty, Republic of Kazakhstan, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it. V.A.Mechnik, orcid.org/0000-0003-2686-3712, V.Bakul Institute ...
- Created on 28 August 2024
- 2. Influence of hot plastic deformation on properties of the carbon steel
- (Content №2 2024)
- ... dispersion of pearlite colonies is accompanied by different rates of change in the properties of carbon steel. For pearlite formed from austenite after annealing, the strain hardening coefficient and maximum ...
- Created on 01 May 2024
- 3. Research on an eco-safe filtration plant for wastewater treatment made of natural raw materials
- (Content №5 2023)
- ... during drying of leaves, which is explained by hardening of intercellular spaces with formation of a specific geometry of holes. For the first time, mathematical modeling of purified wastewater movement ...
- Created on 27 October 2023
- 4. Application of the stereomicrophotogrammetric method for the complex study of the Al-Cu-Mg alloys system
- (Content №4 2023)
- ... 97 hours, which does not decrease subsequently. After natural hardening, the average fracture strength increases to Rm 440.3 with a relative elongation of 21.8 %. Mechanical tests have shown that the tensile ...
- Created on 28 August 2023
- 5. Analysis of surface settlements induced by tunnel excavation with EPB-TBM
- (Content №1 2023)
- ... This study illustrates that the results obtained by FEM with the use of Hardening Soil as a constitutive model to represent the soil are almost identical to those measured during the tunnel excavation. ...
- Created on 25 February 2023
- 6. Graphitizing modification of the axial zone of cast iron rolling rolls in the liquidus-solidus temperature range
- (Content №1 2023)
- ... castings due to physical and mechanical effects on the two-phase zone, deoxidation and alloying of the central zones of castings. Keywords: cast iron, modifications, rolling rolls, hardening, chill-sand ...
- Created on 25 February 2023
- 7. Mathematical modeling the quarry wall stability under conditions of heavily jointed rocks
- (Content №6 2022)
- ... fault was considered. The safety factor of the quarry wall was determined under conditions of increased rock fracturing, as well as after carrying out measures to strengthen the rocks with a hardening ...
- Created on 25 December 2022
- 8. Synthesis of phosphosulphate substance and properties of its structured mixture with quartz sand
- (Content №4 2022)
- ... Isagulov, A.Z., & Repyakh, S.I. (2021). Cold hardening mixture for molds and cores. Liteynoye proizvodstvo, 6, 18-21. 15. Osypenko, I.O., Solonenko, L.I., & Bilyy, O.P. (2018). Systematic use of ...
- Created on 29 August 2022
- 9. Prospects of using the polymetallic ore processing waist for producing hardening mixtures
- (Content №3 2022)
- ... (3): 088 - 093 https://doi.org/10.33271/nvngu/2022-3/088 Abstract: Purpose. Justification of possibility to create the hardening mixtures with filler based on tailings of the ...
- Created on 29 June 2022
- 10. Estimation of glass lubricant viscosity for hot extrusion of Cr-Ni steel and Ni alloy tubes
- (Content №1 2022)
- ... of basic values of deformation resistance on the percentage of alloying elements (Ni + Cr) in steels has been found. With the addition of hardening alloying elements (Mo, W, V, Nb) into the alloy steel, ...
- Created on 25 February 2022
- 11. Simulation of amber extraction processes from sandy and clay rocks with stope filling
- (Content №6 2021)
- ... Arslanov, M.Z., Mustafin, S.A., Zeinullin, A.A., Kulpeshov,B.S., & Mustafin, T.S. (2020). Model for determining classification of filling materials hardening. News of National Academy of Sciences of ...
- Created on 29 December 2021
- 12. Electric arc spraying of cermet coatings of steel 65G-Tic system
- (Content №2 2021)
- ... operational properties, makes it possible to meet the requirements for the restoration and hardening of worn surfaces. This leads to an increase in the service life of parts not only in mining, but also ...
- Created on 29 April 2021
- 13. Kinetics of quartz sand and its mixtures drying by microwave radiation
- (Content №1 2021)
- ... Keywords: kinetics, drying, sand, sodium silicate, steam, structuring, microwave radiation References. 1. Yashina, S.A., & Klyukova, T.D. (2018). Study on the mechanism of crumbling of self-hardening ...
- Created on 05 March 2021
- 14. Sodium silicate solute foaming in a flat slot-type capillary under microwave radiation influence
- (Content №6 2020)
- ... 13. Solonenko, L., Prokopovich, I., Repyakh, S., Sukhoi, K., & Dmytrenko, D. (2019). System analysis of modern areas of increasing environmental and sanitary hygienic safety of using cold hardening ...
- Created on 22 December 2020
- 15. Effect of alloying heat-resistant packing coatings on their tribotechnical, physical and mechanical properties
- (Content №6 2020)
- ... of the frictional contact. It was observed that depending on the nature of the thermal effect, there occurs hardening of the surface layers of the coating and of the base metal while increasing the duration ...
- Created on 22 December 2020
- 16. Impact of duration of mechanochemical activation on enhancement of zinc leaching from polymetallic ore tailings
- (Contens №5 2020)
- ... Hirnychoho Universytetu, (6), 25-30. https://doi.org/10.29202/nvngu/2019-6/4. 3. Golik, V., Komashchenko, V., & Morkun, V. (2015). Feasibility of using the mill tailings for preparation of self-hardening ...
- Created on 30 October 2020
- 17. Carbonization and crushability of structured sand-sodium-silicate mixtures
- (Contens №5 2020)
- ... 10. Solonenko, L., Prokopovitch, I., Repyakh, S., Sukhoi, K., & Dmytrenko, D. (2019). System analysis of modern areas of increasing environmental and sanitary hygienic safety of using cold hardening mixtures in foundry. Proceedings of Odessa Polytechnic University, 1(57), 90-98. https:// doi.org/10.15276/opu.1.57.2019.11. ...
- Created on 30 October 2020
- 18. Study on the effect of plasticizers and thermoplastics on the strength and toughness of epoxy resins
- (Contens №4 2020)
- ... Purpose. To increase the strength and toughness of epoxy resins of “cold hardening” and “hot hardening” by using modified plasticizers and thermoplastic polymers. Methodology. Epoxy resins of ...
- Created on 30 August 2020
- 19. The use of deforming broaching for enhancing the efficiency of cutter chisels
- (Contens №2 2020)
- ... 5. Studenets, S. F., Yeriomin, P. M., & Cherniavskyi, O. V. (2015). Influence of deformation conditions during the machining of hard-alloy combined broaches on the structure and hardening of the surface layer of cast irons. Superhard materials, 4, 91-99. ...
- Created on 10 May 2020
- 20. Development and research of thеrmоplаstiс methods for hardening details
- (Contens №2 2020)
- ... Methodology. Experimental studies on the influence of the temperature factor on the hardening process were carried out at a specialized facility developed at the Department of Engineering and Woodworking Technology of CNUT (Chernihiv National University of Technology). The three-roller pneumatic device was mounted on a support of the lathe-screw machine model 1K62. Workpieces were mounted on a special mandrel in a three-jaw chuck. The spindle speed was set using an electronic tachometer; the pressure on the rollers was recorded by a pressure gauge. Before the rolling, the workpiece was kept in a laboratory electric furnace, the preheat temperature was recorded by a logometer. Since the surface quality of surface plastic deformation (SPD) treatment with heating depends on a large number of factors, a central second-order rotatable composite layout was used to obtain the multifactor model. On the basis of a priori information and the results of the previous experiments, the feed (S, mm/rev), pressure (P, H) and preheat temperature (T, °C) were taken as factors determining the process. The surface layer hardness was taken as the initial parameter. ...
- Created on 10 May 2020